Shape Code 21

U bar reinforcement is steel rebar formed into the U-shaped configuration identified as Shape Code 21. South Steel supplies cut and bent reinforcement online for homeowners, self-builders, contractors and trade buyers. Order your bars using the diameter, dimensions and quantities stated in your structural engineer’s drawings, calculations, specification or bar bending schedule. The product diagram helps you match those details to the bar you’re purchasing.

Order U Bars Online

With your specification confirmed, choose the required rebar diameter for Shape Code 21, enter the dimensions requested on this page and select your quantity. Review the details before adding your U bars to the basket and completing checkout. Use the units shown beside each measurement field.

Ordering several U bar sizes? Configure each distinct set of dimensions separately, checking the quantity against the relevant schedule entry. A shared shape code doesn’t mean that every bar on your project has the same measurements. For a larger reinforcement list, send your schedule rather than trying to describe each bar over the phone.

U Bars and Shape Code 21 Explained

“U bar” is the everyday description of the bar’s outline. “Shape Code 21” identifies its particular bent configuration, with two legs connected by a central section. The code describes the shape, not one fixed product size or a recommended bar diameter.

Compare the diagram with the matching detail in your project documents. Follow the measurement references rather than estimating from the picture, and don’t assume the two legs should be equal. Your engineer must confirm any missing dimensions or changes to the specification before you order.

Reinforcement Steel From South Steel

Source Shape Code 21 U bars alongside our wider reinforcement steel range, including straight rebar and reinforcing mesh. We also supply structural steel and related products, making it easier to organise different steel requirements through one supplier.

For projects containing several shapes, sizes or quantities, upload your bar bending schedule for a quote. Include the relevant drawings and any accompanying specification notes. You can also contact South Steel for product and ordering enquiries. Our team can review the information supplied, while structural design decisions remain with your engineer.